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Migration from SVN

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quemy 2012-08-30 11:30:11 +02:00
commit 8cd56f37db
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branches/rc2.0/eo/src/es/matrices.h
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#ifndef MATRICES_H
#define MATRICES_H
#include <vector>
/** @ingroup Utilities
*/
class lower_triangular_matrix {
unsigned n;
std::vector<double> data;
public:
lower_triangular_matrix(unsigned n_ = 0) : n(n_), data(n * (n+1) / 2) {};
void resize(unsigned n_) {
n = n_;
data.resize(n*(n+1)/2);
}
std::vector<double>::iterator operator[](unsigned i) { return data.begin() + i * (i+1) / 2; }
std::vector<double>::const_iterator operator[](unsigned i) const { return data.begin() + i*(i+1)/2; }
};
/** @ingroup Utilities
*/
class square_matrix {
unsigned n;
std::vector<double> data;
public:
square_matrix(unsigned n_ = 0) : n(n_), data(n * n) {};
void resize(unsigned n_) {
n = n_;
data.resize(n*n);
}
std::vector<double>::iterator operator[](unsigned i) { return data.begin() + i * n; }
std::vector<double>::const_iterator operator[](unsigned i) const { return data.begin() + i*n; }
};
#endif